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Moon orbiter marks a milestone

NASA's Lunar Reconnaissance Orbiter began orbiting the moon one year ago today, and in honor of the anniversary, the space agency is offering a gallery of "10 cool things" observed by the space probe. This picture, documenting elevation on the moon's far side, is the most psychedelic pic in the set. The big blue blotch is the South Pole-Aitken Basin, one of the largest impact craters in the solar system.